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revision 1.17 by wakaba, Mon Oct 22 11:33:15 2007 UTC revision 1.27 by wakaba, Mon Nov 5 11:39:39 2007 UTC
# Line 1  Line 1 
1  <!DOCTYPE html>  <!DOCTYPE html>
2  <html lang="en" class="formal-specification status-work-in-progress">  <html lang="en" class="formal-specification"><!-- work-in-progress -->
3  <head>  <head>
4  <title>Selectors Serialization Format for Testing (SSFT) Specification</title>  <title>Selectors Serialization Format for Testing (SSFT) Specification</title>
5  <link rel="stylesheet" href="http://suika.fam.cx/www/style/html/spec">  <link rel="stylesheet" href="http://suika.fam.cx/www/style/html/spec">
# Line 10  Line 10 
10  <div class="header">  <div class="header">
11  <h1>Selectors Serialization Format for Testing (<abbr>SSFT</abbr>)  <h1>Selectors Serialization Format for Testing (<abbr>SSFT</abbr>)
12  Specification</h1>  Specification</h1>
13  <h2>Working Draft <time datetime=2007-10-22>22 October 2007</time></h2>  <h2>First Edition <!-- Working Draft -->
14    <time datetime=2007-11-05>5 November 2007</time></h2>
15    
16  <dl class="versions-uri">  <dl class="versions-uri">
17  <dt>This Version</dt>  <dt>This Version</dt>
18    <dd><code class="URI">&lt;<a href="http://suika.fam.cx/www/markup/selectors/ssft/ssft"    <dd><code class="URI">&lt;<a href="http://suika.fam.cx/www/markup/selectors/ssft/ssft-20071105"
19        >http://suika.fam.cx/www/markup/selectors/ssft/ssft</a>&gt;</code></dd>        >http://suika.fam.cx/www/markup/selectors/ssft/ssft-20071105</a>&gt;</code></dd>
20  <dt>Latest Version</dt>  <dt>Latest Version</dt>
21    <dd><code class="URI">&lt;<a href="http://suika.fam.cx/www/markup/selectors/ssft/ssft"    <dd><code class="URI">&lt;<a href="http://suika.fam.cx/www/markup/selectors/ssft/ssft"
22        >http://suika.fam.cx/www/markup/selectors/ssft/ssft</a>&gt;</code></dd>        >http://suika.fam.cx/www/markup/selectors/ssft/ssft</a>&gt;</code></dd>
 <!--  
23  <dt>Latest Working Draft</dt>  <dt>Latest Working Draft</dt>
24  -->    <dd><code class="URI">&lt;<a href="http://suika.fam.cx/www/markup/selectors/ssft/ssft-work"
25          >http://suika.fam.cx/www/markup/selectors/ssft/ssft-work</a>&gt;</code></dd>
26  <!-- <dt>Previous Version</dt> -->  <!-- <dt>Previous Version</dt> -->
27  <dt>Version History</dt>  <dt>Version History</dt>
28    <dd><code class=URI>&lt;<a href="http://suika.fam.cx/gate/cvs/markup/selectors/ssft/ssft.en.html">http://suika.fam.cx/gate/cvs/markup/selectors/ssft/ssft.en.html</a>&gt;</code></dd>    <dd><code class=URI>&lt;<a href="http://suika.fam.cx/gate/cvs/markup/selectors/ssft/ssft-work.en.html">http://suika.fam.cx/gate/cvs/markup/selectors/ssft/ssft-work.en.html</a>&gt;</code></dd>
29  </dl>  </dl>
30  <dl class="authors" id="author">  <dl class="authors" id="author">
31  <dt>Author</dt>  <dt>Author</dt>
# Line 52  available at <code class="URI">&lt;<a Line 53  available at <code class="URI">&lt;<a
53  <div id="abstract" class="section">  <div id="abstract" class="section">
54  <h2>Abstract</h2>  <h2>Abstract</h2>
55    
56  <div class="ed issue">...</div>  <p>This document defines
57    <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>,
58    a subset of Selectors language which is suitable for describing results
59    of Selectors parsing tests.</p>
60    
61  </div>  </div>
62    
# Line 63  available at <code class="URI">&lt;<a Line 67  available at <code class="URI">&lt;<a
67  at the time of its publication.  Other documents  at the time of its publication.  Other documents
68  might supersede this document.</em></p>  might supersede this document.</em></p>
69    
70  <p>This document is a working draft, produced as part of the  <p>This document is the specification
71    <!-- This document is a working draft -->
72    of <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>,
73    produced as part of the
74  <a href="http://suika.fam.cx/www/markup/html/whatpm/readme">Whatpm</a>  <a href="http://suika.fam.cx/www/markup/html/whatpm/readme">Whatpm</a>
75  subproject  subproject
76  of the <a href="http://suika.fam.cx/www/manakai-core/doc/web/">manakai</a>  of the <a href="http://suika.fam.cx/www/manakai-core/doc/web/">manakai</a>
77  project.  It might be updated, replaced, or obsoleted by  project.
78    <!-- It might be updated, replaced, or obsoleted by
79  other documents at any time.  It is inappropriate to  other documents at any time.  It is inappropriate to
80  cite this document as other than <q>work in progress</q>.</p>  cite this document as other than <q>work in progress</q>. --></p>
81    
82  <p>Comments on this document are welcome and  <p>Comments on this document are welcome and
83  may be sent to the <a href="#author">author</a>.</p>  may be sent to the <a href="#author">author</a>.</p>
# Line 98  in a tree structure and are used in Web Line 106  in a tree structure and are used in Web
106  <abbr>API</abbr></a>  <abbr>API</abbr></a>
107  <cite class="bibref informative">[<a href="#ref-SAPI">SAPI</a>]</cite>.</p>  <cite class="bibref informative">[<a href="#ref-SAPI">SAPI</a>]</cite>.</p>
108    
109  <div class="issue ed">...</div>  <p>It is so flexible language that a conceptually same pattern
110    can be represented in inifnite numbers of instances of selectors.
111    It might be convinient for e.g. validation of a test result to
112    define a subset of the language, in which no semantically equivalent
113    selectors are contained.</p>
114    
115  <p><a href="http://dev.w3.org/cvsweb/csswg/cssom/Overview.html">The  <p><a href="http://dev.w3.org/cvsweb/csswg/cssom/Overview.html">The
116  <abbr title="Cascading Style Sheets Object Model">CSSOM</abbr>  <abbr title="Cascading Style Sheets Object Model">CSSOM</abbr>
# Line 111  attribute.  However, the algorithm is in Line 123  attribute.  However, the algorithm is in
123  <time datetime=2007-09-25>at the time of the writing</time>.    <time datetime=2007-09-25>at the time of the writing</time>.  
124  Note that current Web browser implementations  Note that current Web browser implementations
125  of the <code>selectorText</code> attribute are consistently broken  of the <code>selectorText</code> attribute are consistently broken
126  in not escaping unsafe identifiers.</p>  in not escaping unsafe identifiers and therefore it is not wise
127    to deploy that format for testing.</p>
128    
129  </div>  </div>
130    
# Line 120  in not escaping unsafe identifiers.</p> Line 133  in not escaping unsafe identifiers.</p>
133    
134  <p>The key words <q><dfn id=must><em class="rfc2119">MUST</em></dfn></q>,  <p>The key words <q><dfn id=must><em class="rfc2119">MUST</em></dfn></q>,
135  <q><dfn id=must-not><em class="rfc2119">MUST NOT</em></dfn></q>,  <q><dfn id=must-not><em class="rfc2119">MUST NOT</em></dfn></q>,
136  <q><dfn id=should><em class="rfc2119">SHOULD</em></dfn></q>,  <q><dfn id=should><em class="rfc2119">SHOULD</em></dfn></q>, and
 <q><dfn id=should-not><em class="rfc2119">SHOULD NOT</em></dfn></q>, and  
137  <q><dfn id=may><em class=rfc2119>MAY</em></dfn></q> in this  <q><dfn id=may><em class=rfc2119>MAY</em></dfn></q> in this
138  document are to be interpreted as described in  document are to be interpreted as described in
139  <a href="urn:ietf:rfc:2119"><abbr title="Request for Comments">RFC</abbr>  <a href="urn:ietf:rfc:2119"><abbr title="Request for Comments">RFC</abbr>
# Line 157  to <a href="#algorithm-serialize-a-simpl Line 169  to <a href="#algorithm-serialize-a-simpl
169  selector</a> or <a href="#algorithm-serialize-a-group-of-selectors">serialize  selector</a> or <a href="#algorithm-serialize-a-group-of-selectors">serialize
170  a group of selectors</a>.</p>  a group of selectors</a>.</p>
171    
 <div class="issue ed">  
 <p><a href="http://suika.fam.cx/gate/cvs/*checkout*/markup/html/whatpm/Whatpm/CSS/SelectorsSerializer.pm">See  
 also the reference implementation</a> for now.</p>  
 </div>  
   
172  <div class="note memo">  <div class="note memo">
173  <p>The serialized representation will not contain any comment.</p>  <p>The serialized representation will not contain any comment.</p>
174  </div>  </div>
 <!-- TODO: link terms to Selectors -->  
175    
176  <div class=section id=serializing-tokens>  <div class=section id=serializing-tokens>
177  <h3>Serializing Tokens</h3>  <h3>Serializing Tokens</h3>
178    
179  <p>To <dfn id=algorithm-normalize-an-ident title="normalize an IDENT">normalize  <p>To <dfn id=algorithm-normalize-an-ident title="normalize a string as an IDENT">normalize
180  an <code>IDENT</code> (<dfn id=var-n><var>n</var></dfn>)</dfn>,  a string (<dfn id=var-n><var>n</var></dfn>) as an <code>IDENT</code></dfn>,
181  the following algorithm <em class=rfc2119>MUST</em> be used:</p>  the following algorithm <em class=rfc2119>MUST</em> be used:</p>
182  <ol>  <ol>
183  <li>Replace the escape sequences (<code>\</code> and following  <li>If <var>n</var> is either an <code>IDENT</code> or a <code>HASH</code>,
184  characters) in <var>n</var> by characters represented by them  replace the escape sequences (<code>\</code> and following characters) in
185  respectively.</li>  <var>n</var> by characters represented by them respectively.</li>
186    <li>If <var>n</var> is a <code>HASH</code>, remove the leading
187    <code class=char>U+0023</code> <code class=charname>NUMBER SIGN</code>
188    (<code class=char>#</code>) character from <var>n</var>.</li>
189  <li>If there is any character that is <em>not</em> one of  <li>If there is any character that is <em>not</em> one of
190  <code class=char>U+002D</code> <code class=charname>HYPHEN-MINUS</code>  <code class=char>U+002D</code> <code class=charname>HYPHEN-MINUS</code>
191  (<code class=char>-</code>), <code class=char>U+0030</code>  (<code class=char>-</code>), <code class=char>U+0030</code>
# Line 194  A</code> (<code class=char>A</code>) to Line 203  A</code> (<code class=char>A</code>) to
203  <code class=char>U+0080</code> to <code class=char>U+D7FF</code>, or  <code class=char>U+0080</code> to <code class=char>U+D7FF</code>, or
204  <code class=char>U+E000</code> to <code class=char>U+10FFFF</code> in  <code class=char>U+E000</code> to <code class=char>U+10FFFF</code> in
205  <var>n</var>, then replace it by string <code>\<var>HHHHHH</var></code>, where  <var>n</var>, then replace it by string <code>\<var>HHHHHH</var></code>, where
206  <dfn id=var-HHHHHH><var>HHHHHH</var></dfn> is the upper$B!>(Bcase zero$B!>(Bpadded  <dfn id=var-ident-HHHHHH><var>HHHHHH</var></dfn> is the uppercase
207  hexadecimal representation of the character.  If the character  zero$B!>(Bpadded hexadecimal representation of the character.  If the character
208  is outside the range of <code>[<code class=char>U+0000</code>,  is outside the range of <code>[<code class=char>U+0000</code>,
209  <code class=char>U+10FFFF</code>]</code>, <var>HHHHHH</var>  <code class=char>U+10FFFF</code>]</code>, <var>HHHHHH</var>
210  <em class=rfc2119>MUST</em> be <code>FFFFFF</code>.</li>  <em class=rfc2119>MUST</em> be <code>FFFFFF</code>.</li>
# Line 226  character by string <code>\00002D</code> Line 235  character by string <code>\00002D</code>
235  <li>Then, <var>n</var> is the result of the algorithm.</li>  <li>Then, <var>n</var> is the result of the algorithm.</li>
236  </ol>  </ol>
237    
238  <p>To <dfn id=algorithm-normalize-a-string title="normalize a STRING">normalize  <p>To <dfn id=algorithm-normalize-a-string title="normalize a string (STRING or IDENT) as a STRING">normalize
239  a <code>STRING</code> (<dfn id=var-s><var>s</var></dfn>)</dfn>,  a string (<dfn id=var-s><var>s</var></dfn>) as a <code>STRING</code></dfn>,
240  the following algorithm <em class=rfc2119>MUST</em> be used:</p>  the following algorithm <em class=rfc2119>MUST</em> be used:</p>
241  <ol>  <ol>
242  <li><p>Replace the escape sequences (<code>\</code> and following  <li>If <var>s</var> is either an <code>IDENT</code> or a
243  characters) in <var>s</var> by characters represented by them  <code>STRING</code>, replace the escape sequences (<code>\</code> and
244    following characters) in <var>s</var> by characters represented by them
245  (or an empty string if <code>\</code> is immediately followed by  (or an empty string if <code>\</code> is immediately followed by
246  newline character(s)) respectively.</p></li>  newline character(s)) respectively.</li>
247  <li><p>Remove the quotation characters in <var>s</var>  <li>If <var>s</var> is a <code>STRING</code>, remove the quotation marks
248  if <var>s</var> is a <code>STRING</code>.</p>  enclosing <var>s</var>.</li>
   
 <div class="note memo">  
 <p>The input <var>s</var> to this algorithm may be an  
 <code>IDENT</code>.</p>  
 </div></li>  
249  <li><p>If there is any character that is <em>not</em> one of  <li><p>If there is any character that is <em>not</em> one of
250  <code class=char>U+0020</code> <code class=charname>SPACE</code>,  <code class=char>U+0020</code> <code class=charname>SPACE</code>,
251  <code class=char>U+0021</code> <code class=charname>EXCLAMATION MARK</code>  <code class=char>U+0021</code> <code class=charname>EXCLAMATION MARK</code>
# Line 251  BRACKET</code>, <code class=char>U+005D< Line 256  BRACKET</code>, <code class=char>U+005D<
256  SQUARE BRACKET</code> to <code class=char>U+D7FF</code>, or  SQUARE BRACKET</code> to <code class=char>U+D7FF</code>, or
257  <code class=char>U+E000</code> to <code class=char>U+10FFFF</code> in  <code class=char>U+E000</code> to <code class=char>U+10FFFF</code> in
258  <var>s</var>, then replace it by string <code>\<var>HHHHHH</var></code>, where  <var>s</var>, then replace it by string <code>\<var>HHHHHH</var></code>, where
259  <dfn id=var-HHHHHH><var>HHHHHH</var></dfn> is the upper$B!>(Bcase zero$B!>(Bpadded  <dfn id=var-string-HHHHHH><var>HHHHHH</var></dfn> is the uppercase
260  hexadecimal representation of the character.  If the character  zero$B!>(Bpadded hexadecimal representation of the character.  If the character
261  is outside the range of <code>[<code class=char>U+0000</code>,  is outside the range of <code>[<code class=char>U+0000</code>,
262  <code class=char>U+10FFFF</code>]</code>, <var>HHHHHH</var>  <code class=char>U+10FFFF</code>]</code>, <var>HHHHHH</var>
263  <em class=rfc2119>MUST</em> be <code>FFFFFF</code>.</p></li>  <em class=rfc2119>MUST</em> be <code>FFFFFF</code>.</p></li>
# Line 288  representations are literally compared.< Line 293  representations are literally compared.<
293  </div>  </div>
294    
295  <div class="issue ed">  <div class="issue ed">
296  <p>Need to define <dfn id=lower-case>lower$B!>(Bcase</dfn>.  <p>In a future version of the specification, we need to define
297  It is tr/A-Z/a-z/ for now.</p>  <dfn id=lowercase>lowercase</dfn> (maybe by referencing some version of
298    some module of <abbr>CSS</abbr>).  It is <code>tr/A-Z/a-z/</code> for now.</p>
299  </div>  </div>
300    
301    <p>To
302    <dfn id=algorithm-normalize-an-integer title="normalize an integer">normalize
303    an integer (<dfn id=var-int-i><var>i</var></dfn>)</dfn>, the following
304    algorithm <em class=rfc2119>MUST</em> be used:</p>
305    <ol class=algorithm>
306    <li>If <var>i</var> is equal to zero (0), return a string with only a
307    character: <code class=char>U+0030</code>
308    <code class=charname>DIGIT ZERO</code> (<code class=char>0</code>).
309    Stop the algorithm.</li>
310    <li>Let <dfn id=var-int-result><var>result</var></dfn> be an empty string.</li>
311    <li>If <var>i</var> is less than zero (0), append a
312    <code class=char>U+002D</code> <code class=charname>HYPHEN-MINUS</code>
313    (<code class=char>-</code>) character to <var>result</var>.</li>
314    <li>Append the decimal representation of the absolute value of
315    <var>i</var> to <var>result</var>.  The decimal (base$B!>(Bten) representation
316    <em class=rfc2119>MUST NOT</em> begin with a <code class=char>U+0030</code>
317    <code class=charname>DIGIT ZERO</code> (<code class=char>0</code>)
318    character.</li>
319    <li>Return <var>result</var>.</li>
320    </ol>
321    
322  </div>  </div>
323    
324    
# Line 319  the following algorithm <em class=rfc211 Line 346  the following algorithm <em class=rfc211
346        <dl class=switch>        <dl class=switch>
347        <dt>If a namespace URI is specified (via namespace prefix, or        <dt>If a namespace URI is specified (via namespace prefix, or
348        by omitting namespace prefix where a default namespace is specified)</dt>        by omitting namespace prefix where a default namespace is specified)</dt>
349          <dd class="ed">@@</dd>          <dd>Append the namespace URI as a
350            <a href="#algorithm-normalize-an-ident" title="normalize a string as an IDENT">normalized
351            <code>IDENT</code></a> to <var>r</var>.  Then, append a
352            <code class=char>U+007C</code>
353            <code class=charname>VERTICAL BAR</code> (<code class=char>|</code>)
354            character to <var>r</var>.</dd>
355        <dt>If the null namespace is specified (by zero$B!>(Blength namespace        <dt>If the null namespace is specified (by zero$B!>(Blength namespace
356        prefix)</dt>        prefix)</dt>
357          <dd>Append a <code class=char>U+007C</code>          <dd>Append a <code class=char>U+007C</code>
# Line 336  the following algorithm <em class=rfc211 Line 368  the following algorithm <em class=rfc211
368        </dl>        </dl>
369      </li>      </li>
370      <li>If <var>ss</var> is a type selector, append the      <li>If <var>ss</var> is a type selector, append the
371      <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>      <a href="#algorithm-normalize-an-ident" title="normalize a string (IDENT) an IDENT">normalized</a>
372      local name to <var>r</var>.</li>      local name to <var>r</var>.</li>
373      <li>If <var>ss</var> is a universal selector, append      <li>If <var>ss</var> is a universal selector, append
374      a <code class=char>U+002A</code> <code class=charname>ASTERISK</code>      a <code class=char>U+002A</code> <code class=charname>ASTERISK</code>
# Line 353  the following algorithm <em class=rfc211 Line 385  the following algorithm <em class=rfc211
385        Append a namespace prefix as following:        Append a namespace prefix as following:
386        <dl>        <dl>
387        <dt>If a namespace URI is specified</dt>        <dt>If a namespace URI is specified</dt>
388          <dd class=ed>@@</dd>          <dd>Append the namespace URI as a
389          <dd class=ed>@@ Current reference implementation is wrong,          <a href="#algorithm-normalize-an-ident" title="normalize a string as an IDENT">normalized
390          since its result of sorting depends on namespace prefix.</dd>          <code>IDENT</code></a> to <var>r</var>.  Then, append a
391            <code class=char>U+007C</code>
392            <code class=charname>VERTICAL BAR</code> (<code class=char>|</code>)
393            character to <var>r</var>.</dd>
394        <dt>If the null namespace is specified</dt>        <dt>If the null namespace is specified</dt>
395          <dd>Append a <code class=char>U+007C</code>          <dd>Append a <code class=char>U+007C</code>
396          <code class=charname>VERTICAL BAR</code> character to          <code class=charname>VERTICAL BAR</code> character to
# Line 369  the following algorithm <em class=rfc211 Line 404  the following algorithm <em class=rfc211
404        </dl>        </dl>
405      </li>      </li>
406      <li>Append the      <li>Append the
407      <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>      <a href="#algorithm-normalize-an-ident" title="normalize a string (IDENT) as an IDENT">normalized</a>
408      local name to <var>r</var>.</li>      local name to <var>r</var>.</li>
409      <li>If a value is specified in <var>ss</var>:      <li>If a value is specified in <var>ss</var>:
410        <ol>        <ol>
# Line 389  the following algorithm <em class=rfc211 Line 424  the following algorithm <em class=rfc211
424  <dt>If <var>ss</var> is a class selector</dt>  <dt>If <var>ss</var> is a class selector</dt>
425    <dd>Append a <code class=char>U+002E</code> <code class=charname>FULL    <dd>Append a <code class=char>U+002E</code> <code class=charname>FULL
426    STOP</code> (<code class=char>.</code>) character, followed    STOP</code> (<code class=char>.</code>) character, followed
427    by <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>    by <a href="#algorithm-normalize-an-ident" title="normalize a string (IDENT) as an IDENT">normalized</a>
428    class name, to <var>r</var>.</dd>    class name, to <var>r</var>.</dd>
429  <dt>If <var>ss</var> is an <abbr>ID</abbr> selector</dt>  <dt>If <var>ss</var> is an <abbr>ID</abbr> selector</dt>
430    <dd>Append a <code class=char>U+0023</code> <code class=charname>NUMBER    <dd>Append a <code class=char>U+0023</code> <code class=charname>NUMBER
431    SIGN</code> (<code class=char>#</code>) character, followed    SIGN</code> (<code class=char>#</code>) character, followed
432    by <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>    by <a href="#algorithm-normalize-an-ident" title="normalize a string (HASH except for the leading #) as an IDENT">normalized</a>
433    <abbr>ID</abbr>, to <var>r</var>.</dd>    <abbr>ID</abbr>, to <var>r</var>.</dd>
434  <dt>If <var>ss</var> is a pseudo$B!>(Bclass selector</dt>  <dt>If <var>ss</var> is a pseudo$B!>(Bclass selector</dt>
435    <dd>    <dd>
# Line 403  the following algorithm <em class=rfc211 Line 438  the following algorithm <em class=rfc211
438      <code class=charname>COLON</code> (<code class=char>:</code>) character      <code class=charname>COLON</code> (<code class=char>:</code>) character
439      to <var>r</var>.</li>      to <var>r</var>.</li>
440      <li>Append the      <li>Append the
441      <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>      <a href="#algorithm-normalize-an-ident" title="normalize a string (IDENT) as an IDENT">normalized</a>
442      name (in <a href="#lower-case">lower$B!>(Bcase</a>) of the pseudo$B!>(Bclass to      name (in <a href="#lowercase">lowercase</a>) of the pseudo$B!>(Bclass to
443      <var>r</var>.</li>      <var>r</var>.</li>
444      <li>Append any arguments as following:      <li>Append any arguments as following:
445        <dl class=switch>        <dl class=switch>
# Line 415  the following algorithm <em class=rfc211 Line 450  the following algorithm <em class=rfc211
450            PARENTHESIS</code> (<code class=char>(</code>) character            PARENTHESIS</code> (<code class=char>(</code>) character
451            to <var>r</var>.</li>            to <var>r</var>.</li>
452            <li>Append the            <li>Append the
453            <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>            <a href="#algorithm-normalize-an-ident" title="normalize a string (IDENT) as an IDENT">normalized</a>
454            language tag (the argument) to <var>r</var>.            language tag (the argument) to <var>r</var>.
455            <span class="issue ed">Should we normalize cases?</span></li>            <span class="issue ed">Should we normalize cases?</span></li>
456            <li>Append a <code class=char>U+0029</code>            <li>Append a <code class=char>U+0029</code>
# Line 448  the following algorithm <em class=rfc211 Line 483  the following algorithm <em class=rfc211
483            <li>Append a <code class=char>U+0028</code> <code class=charname>LEFT            <li>Append a <code class=char>U+0028</code> <code class=charname>LEFT
484            PARENTHESIS</code> (<code class=char>(</code>) character            PARENTHESIS</code> (<code class=char>(</code>) character
485            to <var>r</var>.</li>            to <var>r</var>.</li>
486            <li>Append <span class=ed>@@ normalized</span>            <li>Let <dfn id=var-a><var>a</var></dfn> be the <var>a</var>
487            integer <var>a</var> to <var>r</var>.            part of the argument.  If the argument is a keyword <code>odd</code>
488            If the argument is a keyword <code>odd</code> or <code>even</code>,            or <code>even</code>, then let <var>a</var> be <code>2</code>.
489            <var>a</var> is <code>2</code>.  If <var>a</var> and            If the <var>a</var> part with following <code>n</code> character
490            <code>n</code> is omitted, <var>a</var> is assumed as            is omitted, then let <var>a</var> be <code>0</code>.
491            <code>0</code>.  Otherwise, if <var>a</var> is omitted,            Otherwise, if only the <var>a</var> part is omitted, then
492            it is assumed as <code>1</code> (or <code>-1</code>,            let <var>a</var> be <code>1</code>.  Otherwise, if the <var>a</var>
493            if there is a <code class=char>U+002D</code>            part is <code>-</code>, then let <var>a</var> be
494            <code class=charname>HYPHEN-MINUS</code> (<code class=char>-</code>)            <code>-1</code>.</li>
495            character).</li>            <li>Let <var>a</var> be the
496              <a href="#algorithm-normalize-an-integer" title="normalize an integer">normalized
497              string representation</a> of integer <var>a</var>.</li>
498              <li>Append <var>a</var> to <var>r</var>.</li>
499            <li>Append a <code class=char>U+006E</code>            <li>Append a <code class=char>U+006E</code>
500            <code class=charname>LATIN SMALL LETTER N</code>            <code class=charname>LATIN SMALL LETTER N</code>
501            (<code class=char>n</code>) character to <var>r</var>.</li>            (<code class=char>n</code>) character to <var>r</var>.</li>
502            <li>Append <span class=ed>@@ normalized</span>            <li>Let <dfn id=var-b><var>b</var></dfn> be the <var>b</var>
503            integer <var>b</var> to <var>r</var>.            part of the argument.  If the argument is a keyword <code>odd</code>,
504            It <em class=rfc2119>MUST</em> be preceded by a sign,            then let <var>b</var> be <code>1</code>.  If the argument is a
505            either <code class=char>U+002B</code> <code class=charname>PLUS            keyword <code>even</code>, then let <var>b</var> be <code>0</code>.
506            SIGN</code> (<code class=char>+</code>) or            If the <var>b</var> part is omitted, then let <var>b</var> be
507            <code class=char>U+002D</code>            <code>0</code>.</li>
508              <li>Let <var>b</var> be the
509              <a href="#algorithm-normalize-an-integer" title="normalize an integer">normalized
510              string representation</a> of integer <var>b</var>.</li>
511              <li>If <var>b</var> does <em>not</em> start with a
512              <code class=char>U+002D</code>
513            <code class=charname>HYPHEN-MINUS</code> (<code class=char>-</code>)            <code class=charname>HYPHEN-MINUS</code> (<code class=char>-</code>)
514            character.  If the argument is a keyword <code>odd</code>,            character, then append <code class=char>U+002B</code>
515            <var>b</var> is <code>1</code>.  If the argument            <code class=charname>PLUS SIGN</code>
516            is a keyword <code>even</code>, <var>b</var> is            (<code class=char>+</code>) to <var>r</var>.</li>
517            <code>0</code>.  If <var>b</var> is omitted, it is assumed as            <li>Append <var>b</var> to <var>r</var>.</li>
           <code>0</code>.  The sign of <code>0</code>  
           <em class=rfc2119>MUST</em> be <code class=char>U+002B</code>  
           <code class=charname>PLUS SIGN</code>  
           (<code class=char>+</code>).</li>  
518            <li>Append a <code class=char>U+0029</code>            <li>Append a <code class=char>U+0029</code>
519            <code class=charname>RIGHT PARENTHESIS</code>            <code class=charname>RIGHT PARENTHESIS</code>
520            (<code class=char>)</code>) character            (<code class=char>)</code>) character
# Line 531  the following algorithm <em class=rfc211 Line 570  the following algorithm <em class=rfc211
570      <code class=charname>COLON</code> characters (<code>::</code>)      <code class=charname>COLON</code> characters (<code>::</code>)
571      to <var>r</var>.</li>      to <var>r</var>.</li>
572      <li>Append the      <li>Append the
573      <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>      <a href="#algorithm-normalize-an-ident" title="normalize a string (IDENT) as an IDENT">normalized</a>
574      name (in <a href="#lower-case">lower$B!>(Bcase</a>) of the pseudo$B!>(Belement      name (in <a href="#lowercase">lowercase</a>) of the pseudo$B!>(Belement
575      to <var>r</var>.</li>      to <var>r</var>.</li>
576      <li>If the pseudo$B!>(Belement has any arguments:      <li>If the pseudo$B!>(Belement has any arguments:
577          The pseudo$B!>(Belement is not supported by this version of          The pseudo$B!>(Belement is not supported by this version of
# Line 582  the following algorithm <em class=rfc211 Line 621  the following algorithm <em class=rfc211
621      (<dfn id=var-sss><var>sss</var></dfn>)</dt>      (<dfn id=var-sss><var>sss</var></dfn>)</dt>
622        <dd>        <dd>
623          <ol>          <ol>
624          <li class=ed><a href="#algorithm-serialize-a-simple-selector">Serialize          <li>If <var>sss</var> contains a universal or type selector, then
625          each simple selector</a> in <var>sss</var>.</li>          <a href="#algorithm-serialize-a-simple-selector" title="serialize a simple selector">serialize
626          <li class=ed>sort</li>          that simple selector</a> and append the result to
627            <var>result</var>.</li>
628            <li>Otherwise, i.e. if <var>sss</var> does not contain a universal or
629            type selector, then
630            <a href="#algorithm-serialize-a-simple-selector" title="serialize a simple selector">serialize
631            a simple selector <code>*</code></a> and append the result to
632            <var>result</var>.</li>
633            <li><a href="#algorithm-serialize-a-simple-selector" title="serialize a simple selector">Serialize
634            any attribute selectors</a> in <var>sss</var>, sort the results,
635            then append them to <var>result</var> in order.</li>
636            <li><a href="#algorithm-serialize-a-simple-selector" title="serialize a simple selector">Serialize
637            any class selectors</a> in <var>sss</var>, sort the results,
638            then append them to <var>result</var> in order.</li>
639            <li><a href="#algorithm-serialize-a-simple-selector" title="serialize a simple selector">Serialize
640            any <abbr>ID</abbr> selectors</a> in <var>sss</var>, sort the results,
641            then append them to <var>result</var> in order.</li>
642            <li><a href="#algorithm-serialize-a-simple-selector" title="serialize a simple selector">Serialize
643            any pseudo$B!>(Bclass selectors</a> in <var>sss</var>, sort the results,
644            then append them to <var>result</var> in order.</li>
645            <li><a href="#algorithm-serialize-a-simple-selector" title="serialize a simple selector">Serialize
646            any pseudo elements</a> in <var>sss</var>, sort the results,
647            then append them to <var>result</var> in order.</li>
648          <li>Append a <a href="#newline">newline</a> to <var>result</var>.</li>          <li>Append a <a href="#newline">newline</a> to <var>result</var>.</li>
649          </ol>          </ol>
650        </dd>        </dd>
# Line 666  representations of <a href="#simple-sele Line 726  representations of <a href="#simple-sele
726    
727  <p class=section-info>This section is <em>non$B!>(Bnormative</em>.</p>  <p class=section-info>This section is <em>non$B!>(Bnormative</em>.</p>
728    
 <div class="ed issue">  
 <p><a href="http://suika.fam.cx/gate/2007/css/parser-interface">Try demo</a>,  
 by choosing <q>Selectors</q> radio button.</p>  
   
729  <div class="example figure block">  <div class="example figure block">
730  <div class="caption">...</div>  <p>The <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
731    representation of a selector <code>p + q</code> is:</p>
732    
733  <pre><code>...</code></pre>  <pre><code>    *|p
734      + *|q
735    </code></pre>
736  </div>  </div>
737    
738    <div class="example figure block">
739    <p>The <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
740    representation of a selector <code>a#id.class1:n\ot(:Active)/*
741     comment
742    */.class2</code> is:</p>
743    
744    <pre><code>    *|a.class1.class2#id:not(
745            :active
746        )
747    </code></pre>
748    </div>
749    
750    <div class="example figure block">
751    <p>The <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
752    representation of a
753    <a href="http://www.w3.org/TR/css3-selectors/#grouping">group of selectors</a>
754    <code>a, #b, C[d^=e], .\31 23</code> is:</p>
755    
756    <pre><code>    *|a
757    ,
758        *|*#b
759    ,
760        *|C[|d^="e"]
761    ,
762        *|*.\00003123
763    </code></pre>
764  </div>  </div>
765    
766  </div>  </div>
# Line 727  by choosing <q>Selectors</q> radio butto Line 812  by choosing <q>Selectors</q> radio butto
812  <dt id=ref-HTML5>HTML5</dt>  <dt id=ref-HTML5>HTML5</dt>
813    <dd><cite><a href="http://whatwg.org/html5"><abbr>HTML</abbr> 5</a></cite>,    <dd><cite><a href="http://whatwg.org/html5"><abbr>HTML</abbr> 5</a></cite>,
814    <abbr title="Web Hypertext Application Technology Working Group">WHATWG</abbr>    <abbr title="Web Hypertext Application Technology Working Group">WHATWG</abbr>
815    Working Draft.  Work in progress.</dd>    Working Draft, <time datetime="2007-11-03">3 November 2007</time>.
816      Work in progress.</dd>
817  <dt id=ref-SAPI>SAPI</dt>  <dt id=ref-SAPI>SAPI</dt>
818    <dd><cite><a href="http://dev.w3.org/cvsweb/~checkout~/2006/webapi/selectors-api/Overview.html?rev=1.28&amp;content-type=text/html;%20charset=utf-8">Selectors <abbr>API</abbr></a></cite>,    <dd><cite><a href="http://dev.w3.org/cvsweb/~checkout~/2006/webapi/selectors-api/Overview.html?rev=1.28&amp;content-type=text/html;%20charset=utf-8">Selectors <abbr>API</abbr></a></cite>,
819    <abbr title="World Wide Web Consortium">W3C</abbr> Editor's Draft,    <abbr title="World Wide Web Consortium">W3C</abbr> Editor's Draft,
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